Hmmm, 5 days into a walking/running challenge and I've run once and climbed 3 times... Well that's the way the cookie crumbles at times:-)
A days climbing is a good workout, its not all arms, as most of the power moves should through the legs. What is needed is a reasonable sense of balance and someone you trust at the other end of the rope... Otherwise you can end up as I did... This is what happens when your foot rolls on debris as you abseil off!
Big walk/run on Sunday, tomorrow is my day of rest:-)